Packing for piston-rods.



' a citizen of the United States, residing at New' UNITED STATES PATENT Grimes.

AMBROSE A. TRIPOLD, OF NEVST YORK, N. Y.

PACKING FOR PlSTON-RODS.

SPECIFICATION forming part of Letters :Patent No. 648,67 5, dated May 1, 1900.

Application filed December 29,1899. Serial Noi 741,895. (No model.)

To all whom, it may concern.-

Be it known that I, AMBRosE A. TRIPoL'D,

York, (Brooklyn,)in the county of Kingsand State of, New York, have invented an Improvement in Packings for Piston-Rods, of which the following is a specification.

Heretofore it has been difficult in engines carrying a high pressure of steam to effect a tight packing where the pistonfrod passes .hrough the stuffing-box and gland; and the object of my invention is to overcome this difficult-y.

In carrying out my invention I employ a number of rings having inclined faces set in opposite directions.y These are forced -together bythe glandof the stuffing-box in effecting a tight joint. These rings are preferably ofsuch material as Babbitt metal in halves and in groups or pairs with a dividing-ring, and one ring of each pair is prefer-` l ably anged to receivethe 'other ring of the pair, so as to insure tight joints at both the inclined surfaces of the pairs of rings. The divisions between the rings are staggered in relation to one another, and the arrangement of the parts is such as to cause a wedge-like compressing action, insuring the inner faces heingforced against the surface of the piston-rod. In the drawings, Figure l is a vertical scction and partial elevation representing my improvement. Fig. 2 is a cross-section at w of Fig. 1, and Fig. 3 is a cross-section at y y of Fig. 1.

The stuffing-box a and the gland b, fitting therein, and the bolts 2 for holding the said 'parts together and for drawing the gland farther toward the stuffing box are of usual character, the piston-rod c passing through the gland and stuffing-box. The. said studing-box and gland are made as usual for ay packing within the stuffing-box and between the stuffing-box and gland.

In my present invention I employ pairs of rings, c e being the upper or outer pair and ff the lower pair, between which is the center ring d. The section y y is taken through this center ring, showing that the same is divided, or, in other words, made of two approximately equal halves, with the outer face of the ring resting against the inner surface gered in relation to one another, the section .f

xx being taken through the upper pair of half-rings and showing that the inner faces of said rings come in contact with the pistonare out of contact with' one another and with the inner surface ofthe stuffing-box, except at the intersections of thehalf-rings e f with the joints of the half-rings e f', the halfrings rod and that their outer faces or peripheries 4,

e' having ianges trising above the horizonL v tal meeting faces of the rings e. l l The upper and lower faces ofv the half-rings are inclined in opposite directions. Theunder face of the gland and the lower face of the stuffing-box cavity are also inclined at correspondingangles, and the opposite faces l of the pairs of half -rings, including their flanges 3 and 4, are also made with inclined surfaces at corresponding angles, s'othat the various lparts set the one over the other With-V in the cavity of the stuffing-box to'form the .packing forthe piston-rod.

It will be readily seen that the pressure tightened tends to force the various half-rings ofthe packing together, the half-rings d being forced outward against the inner surface of the stuing-box cavity and the pairs of rings forced ltoward the surface of the pistonrod in closer and more intimate contact there With and the horizontal meeting faces of the said pairs of haif-'rings forced into more intimate contact.

It will be noticed that the periphery of the half-rings e f of the pairs do not touch the inner faces ofthe flanges of the half-rings e' f of the pairs, excepting at the intersections of the half-rings e f with the joints of the halfrings e' f', and that the periphery of the halt`- rings e f are free from the inner surface of .the stuffing-box cavity. Consequently the vexerted by the gland b when thel bolts 2 are IOO peripheries of the said half-rings provide for this compressing'aetion as Well as the space between the surface of the halferings d, and the piston-rod provides for the slight compression of the said half-rings, and the further fact that the various divisions between y 'effectually confines the steam Within the cylinder and prevents the same leaking, the ample lubrication of the piston-rod providing suiieient ease of movement through the Babbitt or similar metal. p

I claim as my invention-- f l. In a piston-rod packing, the combination with the stuffing-box and gland and central half-rings with inclined faces in opposite directions, of pairs of half-rings'having fiat meeting faces and inclined opposite faces,

- fthe said pairs coming at either side of the center ring and setting in opposite directions and'v having peripheries contactingat their intersections, substantially as set forth.Y

2. In a piston-rod packing, the combination with the stuffing-box and gland and central half-rings With inclined faces in opposite directions,f of pairs of half-rings having flat -meeting faces and inclined opposite faces, the said pairs corning'at either side of the cenpurposes set forth.

ter ring and setting in opposite directions, one of the pairs of half-ringsbeing smaller than the other pair of half-rings, and the one of largest diameter having flanges extending outside of the smaller half-rings, substantially as and for the purposes set forth.

3. In apiston-rod packing, the combination with the stuffing-box and the gland, of the center half-rings d with their peripheries in contact with the inner surface of the stuffing-box cavity, and their inner' surface free from the piston-rod, the half-rings e e and ff in pairs yat either side of the ring d with their inner faces in con tact with the piston-rod, and the outer edges or peripheries of the half-rings c' f free from the inner surface of the stuffing .box cavity and their adjacent edges or peripheries free from each other except at the intersections of the outer half-rings With the inner half-rings, the said center ring and the pairs of rings having inclined outer faces inl contact with each otherl and with the end of the gland and the end of the stuffing-box cavity and the said pairs of half-rings having fiat meeting faces, substantially as and for the Signed byme this 22d day of December, 1899. f p y g AMBROSE Al TRIPOLD. IW i tn esses: J. S'. STE'rsoN. XVILsoN GODFREY'. 

